ELECTRICAL CONNECTION DEVICE

A receptacle connector includes a receptacle housing and a plurality of receptacle terminals. The receptacle housing has a bottom surface, a top surface and a plurality of terminal grooves that each includes a first side wall portion, a second side wall portion and a top wall portion, and the top wall portion and the second side wall portion help define an insertion opening portion. Each receptacle terminal has a fixed segment which is fixed to the receptacle housing, an elastic segment which extends obliquely and upwardly from a top end of the fixed segment, then is folded back and extends obliquely and upwardly toward the top wall portion and a tail segment which extends toward the second side wall portion. The elastic segment has a contact portion which is positioned below the insertion opening portion and a guiding surface which is positioned below the insertion opening portion.